Reinitialize Object In-Place

#include <iostream>
#include <cstdint>
#include <new>

using namespace std;

// Write your struct and placement new logic here
struct Mode {
    int level;
};

int main() {
    int firstLevel, secondLevel;
    cin >> firstLevel >> secondLevel;

    // Write your in-place reinitialization logic here
    alignas(Mode) static uint8_t buffer[sizeof(Mode)];
    
    Mode *ptr = new(buffer) Mode{firstLevel};
    ptr->~Mode();

    ptr = new(buffer) Mode{secondLevel};
    cout << ptr->level;
    ptr->~Mode();

    return 0;
}

Solving Approach